Vacuum cleaner base



FIG. 1 is a front perspective view of a vacuum cleaner base which embodies our design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof; and,

FIG. 6 is a top view thereof.

The material in dotted lines forms no part of our design. 

The ornamental design for a vacuum cleaner base, as shown and described. 